Defensive publication

ABSTRACT

A COATING COMPOSITION IS DISCLOSED WHICH COMPRISES A MAJOR AMOUNT OF CELLULOSE PROPIONATE AND A MINOR AMOUNT OF A COMPATIBLE POLYAMIDE RESIN. THE CELLULOSE PROPIONATE CONTAINS, BY WEIGHT, AT LEAST ABOUT 35% PROPIONYL, BETWEEN ABOUT 4.4% AND ABOUT 12% HYDROXYL AND NO GREATER THAN ABOUT 4.5% ACETYL, AND HAS A VVISCOSITY OF BETWEEN ABOUT 0.02 TO 20 SECONDS. THE POLYAMIDE RESIN IS MADE BY THE POLYMERIZATION OF THE DIMERIC FATTY ACID WITH ONE OR MORE POLYAMINES, AND HAS A AMINE VALUE OF BETWEEN ABOUT 27 AND ABOUT 400. THE CELLULOSE PROPIONATE AND POLYAMIDE RESIN ARE DISSOLVED IN A SUITABLE SOLVENT SYSTEM AND THE SOLUTION IS ESPECIALLY USEFUL AS AN OVERPRINT FOR WET OXIDIZING INKS.

DEFENSIVE PUBLICATION UNITED STATES PATENT AND TRADEMARK OFFICEPublished at the request of the applicant or owner in accordance withthe Notice of Dec. 16, 1969, 869 0.G. 687. The abstracts of DefensivePublication applications are identified by distinctly numbered seriesand are arranged chronologically. The heading of each abstract indicatesthe number of pages of specification, including claims and sheets ofdrawings contained in the application as originally filed. The files ofthese applications-are available to the public for inspection and.reproduction may be purchased for 30 cents a sheet.

Defensive Publication applications have not been examined as to themerits of alleged invention. The Patent and Trademark Oflice makes noassertion as to the novelty of the disclosed subject matter.

PUBLISHED SEPTEMBER 2, 1975 MODIFIED CELLULOSE PROPIONATE COATINGSLeonard A. Hitc, Jr., Rte. 16, 3704 Hemlock Park 37663, and Ronald K.Lit ton, Rte. 4321, Rock Rose Circle 37664, both of Kingsport, Tenn.

Filed June 3, 1974, Scr. No. 475,372 Int. Cl. COSb 21/08 US. Cl. 26013N0 Drawing. 8 Pages Specification A coating composition is disclosedwhich comprises a major amount of cellulose propionate and a minoramount of a compatible polyamide resin. The cellulose propionatecontains, by weight, at least about 35% propionyl, between about 4.4%and about 12% hydroxyl and no greater than about 4.5% acetyl, and has aviscosity of between about 0.02 to 20 seconds. The polyamide resin ismade by the polymerization of a dimeric fatty acid with one or morepolyamines, and has an amine value of between about 27 and about 400.The cellulose propionate and polyamide resin are dissolved in a suitablesolvent system and the solution is especially useful as an overprint forwet oxidizing inks.

